MCP2200EV-VCP Microchip Technology, MCP2200EV-VCP Datasheet - Page 6

• Manufacturer Part Number: MCP2200EV-VCP
• Description: MOD EVAL USB/RS232 MCP2200
• Manufacturer: Microchip Technology

Specifications of MCP2200EV-VCP

• Design Resources: MCP2200EV-VCP Schematic and PCB
• Main Purpose: Interface, USB 2.0 to UART (RS232) Bridge
• Embedded: No
• Utilized Ic / Part: MCP2200
• Primary Attributes: Full Speed (12Mbps)
• Secondary Attributes: LED Status Indicators
• Processor To Be Evaluated: MCP2200
• Processor Series: MCP2200
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V to 5.5 V
• Silicon Manufacturer: Microchip
• Silicon Core Number: MCP2200
• Kit Application Type: Interface
• Application Sub Type: USB To RS232
• Kit Contents: Board, Docs
• Tool Type: Demonstration Board
• Core Architecture: PIC
• Cpu Core: PIC
• Data Bus Width: 8 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP2200
1.5
The MCP2200 has a built-in, USB 2.0, full-speed
transceiver internally connected to the USB module.
The USB transceiver obtains power from the V
which is internally connected to the 3.3V regulator. The
best electrical signal quality is obtained when V
locally bypassed with a high quality ceramic capacitor.
1.5.1
The MCP2200 devices have built-in pull-up resistors
designed to meet the requirements for full-speed USB.
1.5.1.1
In Bus Power Only mode, all power for the application
is drawn from the USB
the simplest power method for the device.
In order to meet the inrush current requirements of the
USB 2.0 specifications, the total effective capacitance
appearing across VBUS and ground must be no more
than 10 µF. If not, some kind of inrush limiting is
required. For more details, see Section 7.2.4 of the
“Universal Serial Bus Specification”.
According to the USB 2.0 specification, all USB devices
must also support a Low-Power Suspend mode. In the
USB Suspend mode, devices must consume no more
than 500 µA (or 2.5 mA for high powered devices that
are remote wake-up capable) from the 5V V
the USB cable.
The host signals the USB device to enter Suspend
mode by stopping all USB traffic to that device for more
than 3 ms.
During USB Suspend mode, the D+ or D- pull-up
resistor must remain active, which will consume some
of the allowed suspend current budget (500 µA/
2.5 mA).
FIGURE 1-2:
DS22228A-page 6
V
BUS
USB Transceiver
INTERNAL PULL-UP RESISTORS
Bus Power Only
BUS POWER ONLY
(Figure
1-2). This is effectively
V
V
V
DD
SS
USB
BUS
USB
USB
line of
pin,
is
1.6
The GPIO Module is a standard 8-bit I/O port.
1.6.1
The pins can be configured as:
• GPIO – Individually configurable general purpose
• SSPND – USB Suspend state
• USBCFG – Indicates USB configuration status
• RxLED – Indicates USB receive traffic
• TxLED – Indicates USB transmit traffic
1.6.1.1
The SSPND pin (if enabled) reflects the USB state
(Suspend/Resume). The pin is active ‘low’ when the
Suspend state has been issued by the USB host.
Likewise, the pin drives ‘high’ after the Resume state is
achieved.
This pin allows the application to go into Low Power
mode when USB communication is suspended, and
switches to a full active state when USB activity is
resumed.
1.6.1.2
The USBCFG pin (if enabled) starts out ‘low’ during
power-up or after Reset, and goes ‘high’ after the
device successfully configures to the USB. The pin will
go ‘low’ when in Suspend mode and ‘high’ when the
USB resumes.
1.6.1.3
The ‘Rx’ in the pin name is in respect to the USB host.
The RxLED pin is an indicator for USB ‘IN’ messages.
This pin will either pulse low for a period of time
(configurable for ~100 ms or ~200 ms), or toggle to the
opposite
(IN message) by the USB host. This allows the
application to count messages or provide a visual
indication of USB traffic.
1.6.1.4
The ‘Tx’ in the pin name is in respect to the USB host.
The TxLED pin is an indicator for USB ‘OUT’
messages.
This pin will either pulse low for a period of time
(configurable for ~100 ms or ~200 ms), or toggle to the
opposite state for every message transmitted (OUT
message) by the USB host. This allows the application
to count messages or provide a visual indication of
USB traffic.
input or output
GPIO Module
state
CONFIGURABLE PIN FUNCTIONS
SSPND Pin Function
USBCFG Pin Function
RxLED Pin Function (IN Message)
TxLED Pin Function (OUT Message)
for
 2010 Microchip Technology Inc.
every
message
received